Process of producing embossed surfaces.



W. L. JACOBS & A. D. BREWER.

PROCESS OF PRODUCING EMBOSSED SURFACES.

APPLICATION TILED APILZZ, 1912.

1,084,742. Patented Jan. 20, 1914.

1.1: ET-ME l III-3.11.... 5

51 we-whom UNITED STATES PATENT OFFICE WILLIAM LAMBERT JACOB S ANDALBERT DUDLEY BREWER, OF INDIANAPOLIS, INDIANA..

PROCESS OF PRODUCING EMBOSSED SURFACES.

Specification of Letters latcflt.

Patented Jan. 20, 191

Application filed April 22, 1912. Serial No. 692,457.

To all whom it may concern Be it known that we, WILLIAM LAMBERT Jamesand ALBERT DUDLEY BREWER, citizens of the United States, residing atIndianapolis, in the county of-Marion and State of Indiana, haveinvented certain new and useful Improvements in Processes of ProducingEmbossed Surfaces; and we do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to improvements in embossed surfaces and processof producing them.

The object of the invention is to provide a simple and economicalprocess for producing embossed surfaces without distorting or indentingthe sheet or article upon which the surface is produced.

This improved process consists in printing, stamping or otherwiseapplying upon a sheet or other article the design or printed matterdesired to be embossed thereon, by means of an ink or other substancewhich will retain for the time an adhesive or tacky condition.

In the accompanying drawings: Figure 1 represents a plan or face View ofa sheet of paper or other suitable fabric having letters embossedthereon in accordance with this invention; Fig. 2 shows a longitudinalvertical section showing the design embossed thereon in adhesive inkgreatly exaggerated in thickness; Fi 3 is a similar view showing thedesign a ter the powder has been dusted thereon and before the articlehas been subjected to heat; Fig. 4 is a similar view showing the articleafter it has been subjected to heat and in its completed form.

A suitable and effective vehicle for this purpose consists of an inkcomposed of four parts of tallow, one part of linseed oil and a pigmentfor obtaining the color effect desired. This ink is formed by meltingand thoroughly mixing the above ingredients, and the compound soproduced is then cooled and ground in the ordinary manner of producingprinting inks, the resulting ink being very considerably heavier, thatis, more solid than common printing ink.

When the design 1 shown in Fig. 2 has been produced in said ink on thearticle 2 to be embossed, the material for producing the raised effectis applied to said design, preferably by dusting it thereon in powderedform. This powder adheres to the portions of the sheet or articlecarrying the design, as shown at 3 in Fig. 3 and when subjected to heatmelts and coalesces in conformity w th the design, forming on saiddesign a raised mass 4 shown in Fig. l adhering to the article andhaving suflicient flexibility to permit ordinary use of the finishedproduct, said material after coalescence hardening as the article cools.

The embossing material which is applied to the ink is preferablycomposed of two pounds of resin, two pounds of Burgundy pitch, one dramof collodion and one-half ounce of spermaceti. These ingredients aremixed with one gallon. of water and boiled until all the water is drivenoil, when the ingredients will be found to be thoroughly commingled.After the compound so formed cools and hardens it is reduced to a powderof crystalline form, the spcrmaceti preventing the particles fromuniting under ordinary atmospheric conditions. The ingredients may beproportioned to prevent them from melting at any predeterminedtemperature. The powder so formed is dusted over the sheet or otherarticle and a number of grains thereof adhere to the design. The sotreated article is then subjected to suilicient heat to cause the powderto melt and coalesce, and when melted it apparently swells and producesin exact conformity with the design a raised and embossed cfi'ect verylike the embossing produced by steel dies but without in any wayindenting or distorting the sheet or article which is embossed. This isespecially desirable in embossing post cards on which writing is placedon the face opposite that containing the embossed design.

The coalesced material to which a suitable pigment may be added, firmlyadheres to the sheet or other article and hardcns immediately u oncooling, thereby avoiding danger of 0 setting.

By this process embossed surfaces may be produced which cannot bedistinguished from the more expensive steel die embossing unless theopposite face thereof be examined, and it can be much more cheaplycarried out.

We claim as our invention:

A process of producing embossed sursign.

In testimony whereof we have hereunto 10 set our hands 1n presence oftwo subscribmg Witnesses.

1 WILLIAM LAMBERT JAooBs.

ALBERT DUDLEY BREWER.

Witnesses:

ELMER A. TURNER, CHAS, H. HOPKINS.

